diff --git a/sample-apps/JavalinMySQLKotlin/pom.xml b/sample-apps/JavalinMySQLKotlin/pom.xml
index ce97e4da..c64c983c 100644
--- a/sample-apps/JavalinMySQLKotlin/pom.xml
+++ b/sample-apps/JavalinMySQLKotlin/pom.xml
@@ -12,7 +12,7 @@
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <kotlin.version>2.2.20</kotlin.version> <!-- 2.2.x required for JDK 25 -->
-        <log4j2-version>2.24.3</log4j2-version>
+        <log4j2-version>2.25.5</log4j2-version>
     </properties>
 
     <dependencies>